Hello everybody, Since months that i'm thinking about how to implement a Spindle and C axis using the same motor (like the commercial turning centers) in one of my lathes, and i want to share what i think, so if you can help me to understand i would be really thanked.
My first doubt is, can i use the spindle servo motor for positioning ? Because the driver that comes with the spidle servo that i can buy in my country, says that the only input is analog voltage. So my idea is to use the 7i33 to convert pwm to analog voltage and using the pid in emc to close the loop i can handle the feedback, so in a few words, i would be using the standard closed loop from emc but converting the pwm to analog voltage. Then the driver itself uses his own pid to rotate the motor at the desired speed. I don't know if this is possible, or problematic because of the latency..correct me if i'm wrong please. So if this is possible the switching between C axis and spindle mode, would be very easy to make with hal, the only thing that i need to know is if i can reset the position counter when i'm working the spindle as an axis, so once i reached the 359º the counter starts all over again from 0º. Well i hope i've been clear with my question and thanks in advance for your attention. :) Regards. Leonardo. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
